Effect of Nb2O5 on the microstructure and mechanical properties of TiAl based composites produced by hot pressing
Effect of Nb2O5 on the microstructure and mechanical properties of TiAl based composites produced by hot pressing
复制标题
Nb2O5对热压TiAl基复合材料显微组织和力学性能的影响
DOI:
10.1016/j.msea.2011.04.062
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发表时间:
2011-08
期刊:
影响因子:
6.4
通讯作者:
中科院分区:
文献类型:
--
作者:
In situ composites of TiAl reinforced with Al2O3particles are successfully synthesized from an elemental powder mixture of Ti, Al and Nb2O5by the hot-press-assisted reaction synthesis (HPRS) method. The as-prepared composites are mainly composed of TiAl, Al2O3, NbAl3, as well as small amounts of the Ti3Al phase. The in situ formed fine Al2O3particles tend to disperse on the matrix grain boundaries of TiAl resulting in an excellent combination of matrix grain refinement and uniform Al2O3distribution in the composites. The Rockwell hardness and densities of TiAl based composites increase gradually with increasing Nb2O5content, and the flexural strength and fracture toughness of the composites have the maximum values of 634 MPa and 9.78 MPa m1/2, respectively, when the Nb2O5content reaches 6.62 wt.%. The strengthening mechanism was also discussed.
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影响因子:
4.4
作者:
M. A. Muñoz-Morris;I. Gil;D. G. Morris
通讯作者:
M. A. Muñoz-Morris;I. Gil;D. G. Morris
影响因子:
5.7
作者:
Ai Taotao
通讯作者:
Ai Taotao
DOI:
10.4028/www.scientific.net/kem.336-338.1397
发表时间:
2007-04
期刊:
Key engineering material
影响因子:
--
作者:
Jian Feng Zhu;JiQiang Gao;Fen Wang
通讯作者:
Fen Wang
DOI:
10.1016/0921-5093(94)03282-3
发表时间:
1995-02
影响因子:
6.4
作者:
M. Wood;M. Ward-Close
通讯作者:
M. Wood;M. Ward-Close
影响因子:
4.4
作者:
Lapin, J.;Pelachova, T.
通讯作者:
Pelachova, T.